Dynamic process of adverse selection: Evidence from a subsidized community-based health insurance in rural China
This article examines the changes of adverse selection over time during a 3-year subsidized, voluntary-based Community Health Insurance (CHI) scheme in rural China. The data came from a 4-year longitudinal social experimental study (2002-2006) on the CHI in Fengsan Township, Guizhou Province of China. A panel of 8198 observations (average of 2730 individuals) was analyzed using random effect logit model. We found that the effect of health status on the enrollment choice of the CHI scheme was significant. People with chronic condition history, with fair health, and with poor health were more likely to enroll in the scheme than those without chronic condition and with good health status. In addition, we found that almost all of the interaction terms of the health status variables and CHI wave variable were not significant, which indicates that the effects of adverse selection have not significantly changed over time. Furthermore, people with medium income and high income were more likely to enroll in the scheme compared to those with low income. This shows that adverse selection persisted in the subsequent enrollments of the CHI scheme, even with the government subsidy to the premium. However, adverse selection did not become more or less severe over time and worked through to a steady state. In addition, inequity of enrollment still exists under the current premium subsidy policy. Based on the findings, relevant policy implications are put forward to further improve the CHI scheme.
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Volume (Year): 67 (2008)
Issue (Month): 7 (October)
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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Dror, David M. & Soriano, Elmer S. & Lorenzo, Marilyn E. & Sarol, Jesus Jr. & Azcuna, Rosebelle S. & Koren, Ruth, 2005. "Field based evidence of enhanced healthcare utilization among persons insured by micro health insurance units in Philippines," Health Policy, Elsevier, vol. 73(3), pages 263-271, September.
- Xingyuan, Gu & Bloom, Gerald & Shenglan, Tang & Yingya, Zhu & Shouqi, Zhou & Xingbao, Chen, 1993. "Financing health care in rural China: Preliminary report of a nationwide study," Social Science & Medicine, Elsevier, vol. 36(4), pages 385-391, February.
- Zhang, Licheng & Wang, Hong & Wang, Lushang & Hsiao, William, 2006. "Social capital and farmer's willingness-to-join a newly established community-based health insurance in rural China," Health Policy, Elsevier, vol. 76(2), pages 233-242, April.
- Wolfe, John R. & Goddeeris, John H., 1991. "Adverse selection, moral hazard, and wealth effects in the medigap insurance market," Journal of Health Economics, Elsevier, vol. 10(4), pages 433-459.
- Michael Rothschild & Joseph Stiglitz, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," The Quarterly Journal of Economics, Oxford University Press, vol. 90(4), pages 629-649.
- David M. Cutler & Sarah J. Reber, 1998. "Paying for Health Insurance: The Trade-Off between Competition and Adverse Selection," The Quarterly Journal of Economics, Oxford University Press, vol. 113(2), pages 433-466.
- Wagstaff, Adam & Lindelow, Magnus & Jun, Gao & Ling, Xu & Juncheng, Qian, 2009.
"Extending health insurance to the rural population: An impact evaluation of China's new cooperative medical scheme,"
Journal of Health Economics,
Elsevier, vol. 28(1), pages 1-19, January.
- Wagstaff, Adam & Lindelow, Magnus & Gao Jun & Xu Ling & Qian Juncheng, 2007. "Extending health insurance to the rural population : an impact evaluation of China's new cooperative medical scheme," Policy Research Working Paper Series 4150, The World Bank.
- Xueshan, Feng & Shenglan, Tang & Bloom, Gerald & Segall, Malcolm & Xingyuan, Gu, 1995. "Cooperative medical schemes in contemporary rural China," Social Science & Medicine, Elsevier, vol. 41(8), pages 1111-1118, October.
- Wagstaff, Adam & Lindelow, Magnus, 2008. "Can insurance increase financial risk?: The curious case of health insurance in China," Journal of Health Economics, Elsevier, vol. 27(4), pages 990-1005, July.
- Wagstaff, Adam & Lindelow, Magnus, 2005. "Can insurance increase financial risk ? The curious case of health insurance in China," Policy Research Working Paper Series 3741, The World Bank.
- Van de ven, Wynand P.M.M. & Ellis, Randall P., 2000. "Risk adjustment in competitive health plan markets," Handbook of Health Economics,in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 14, pages 755-845 Elsevier.
- Pauly, Mark V, 1986. "Taxation, Health Insurance, and Market Failure in the Medical Economy," Journal of Economic Literature, American Economic Association, vol. 24(2), pages 629-675, June.
- Alexander S. Preker & Guy Carrin, 2004. "Health Financing for Poor People : Resource Mobilization and Risk Sharing," World Bank Publications, The World Bank, number 15019, September.
- Marquis, M Susan & Phelps, Charles E, 1987. "Price Elasticity and Adverse Selection in the Demand for Supplementary Health Insurance," Economic Inquiry, Western Economic Association International, vol. 25(2), pages 299-313, April.
- Ilayperuma Simon, Kosali, 2005. "Adverse selection in health insurance markets? Evidence from state small-group health insurance reforms," Journal of Public Economics, Elsevier, vol. 89(9-10), pages 1865-1877, September.
- George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, Oxford University Press, vol. 84(3), pages 488-500.
- Marquis, M. Susan, 1992. "Adverse selection with a multiple choice among health insurance plans: A simulation analysis," Journal of Health Economics, Elsevier, vol. 11(2), pages 129-151, August.
- Noterman, Jean-Pierre & Criel, Bart & Kegels, Guy & Isu, Katulanya, 1995. "A prepayment scheme for hospital care in the Masisi district in Zaire: A critical evaluation," Social Science & Medicine, Elsevier, vol. 40(7), pages 919-930, April.
- Savage, Elizabeth & Wright, Donald J., 2003. "Moral hazard and adverse selection in Australian private hospitals: 1989-1990," Journal of Health Economics, Elsevier, vol. 22(3), pages 331-359, May.
- Liu, Yuanli & Hsiao, William C. L. & Li, Qing & Liu, Xingzhu & Ren, Minghui, 1995. "Transformation of China's rural health care financing," Social Science & Medicine, Elsevier, vol. 41(8), pages 1085-1093, October.
- Wang, Hong & Zhang, Licheng & Yip, Winnie & Hsiao, William, 2006. "Adverse selection in a voluntary Rural Mutual Health Care health insurance scheme in China," Social Science & Medicine, Elsevier, vol. 63(5), pages 1236-1245, September.
- Selden, Thomas M., 1999. "Premium subsidies for health insurance: excessive coverage vs. adverse selection," Journal of Health Economics, Elsevier, vol. 18(6), pages 709-725, December.
- Arhin, Dyna C., 1994. "The health card insurance scheme in Burundi: A social asset or a non-viable venture?," Social Science & Medicine, Elsevier, vol. 39(6), pages 861-870, September.
- Cardon, James H & Hendel, Igal, 2001. "Asymmetric Information in Health Insurance: Evidence from the National Medical Expenditure Survey," RAND Journal of Economics, The RAND Corporation, vol. 32(3), pages 408-427, Autumn. Full references (including those not matched with items on IDEAS)